Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1979-03-14
1981-07-28
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
123 1A, 123571, 123344, 74645, F02B 3300
Patent
active
042804698
ABSTRACT:
An automotive powertrain includes a conventional piston engine, a continuously variable ratio transmission, an engine speed sensor and a feedback control system. The control system adjusts both the transmission ratio and the throttle valve in the engine carburetor or fuel metering system in response to the position of the accelerator pedal and in response to the crankshaft speed as measured by the engine sensor. The transmission provides extreme overdrive gear ratios which allow the engine to be operated at wide open throttle even during moderate cruising, and, in addition, the engine carburetor or fuel metering system is calibrated to deliver to the engine a stoichiometric air-fuel mixture which is combined, before combustion, with a special proportion of recirculated exhaust gas. As a result of extensive wide open throttle engine operation with the above mentioned intake charge composition, combustion variables are optimized to produce exceptional fuel economy.
REFERENCES:
patent: 3369360 (1968-02-01), DeBiasi
patent: 4005577 (1977-02-01), Haumaier
patent: 4005689 (1977-02-01), Barnard
patent: 4014302 (1977-03-01), Houston
patent: 4023641 (1977-05-01), Ganoung
patent: 4043305 (1977-08-01), Henault
"Evaluation of E.G.R.," Glass et al., SAE Publication 700146, 1/12-16/70.
"Stepless Transmission," Lindsley, Popular Science Magazine, 12/76.
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